diff --git a/.env.example b/.env.example
index 9d40394..2b0507c 100644
--- a/.env.example
+++ b/.env.example
@@ -22,3 +22,7 @@ DEBUG_FORMS=
 COOKIE_DURATION=30
 # Dominio de la tienda
 TIENDA=tienda.sutty.local
+# Obtener esto con Site.find_by_name('panel').airbrake_api_key
+PANEL_URL=https://panel.sutty.nl
+AIRBRAKE_SITE_ID=1
+AIRBRAKE_API_KEY=
diff --git a/Gemfile b/Gemfile
index 64562fc..00b556d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -86,6 +86,11 @@ gem 'rack-mini-profiler'
 gem 'stackprof'
 gem 'prometheus_exporter'
 
+# debug
+gem 'fast_jsonparser'
+gem 'down'
+gem 'sourcemap'
+
 group :themes do
   gem 'adhesiones-jekyll-theme', require: false
   gem 'editorial-autogestiva-jekyll-theme', require: false
diff --git a/Gemfile.lock b/Gemfile.lock
index e6ed57f..0ebf184 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -161,6 +161,8 @@ GEM
     dotenv-rails (2.7.6)
       dotenv (= 2.7.6)
       railties (>= 3.2)
+    down (5.2.0)
+      addressable (~> 2.5)
     editorial-autogestiva-jekyll-theme (0.2.8)
       jekyll (~> 4.0)
       jekyll-data (~> 1.1)
@@ -190,6 +192,7 @@ GEM
       factory_bot (~> 6.1.0)
       railties (>= 5.0.0)
     fast_blank (1.0.0)
+    fast_jsonparser (0.5.0)
     ffi (1.13.1)
     flamegraph (0.9.5)
     forwardable-extended (2.6.0)
@@ -479,6 +482,7 @@ GEM
       jekyll-seo-tag (~> 2.1)
     simpleidn (0.1.1)
       unf (~> 0.1.4)
+    sourcemap (0.1.1)
     spring (2.1.1)
     spring-watcher-listen (2.0.1)
       listen (>= 2.7, < 4.0)
@@ -578,11 +582,13 @@ DEPENDENCIES
   devise-i18n
   devise_invitable
   dotenv-rails
+  down
   editorial-autogestiva-jekyll-theme
   email_address
   exception_notification
   factory_bot_rails
   fast_blank
+  fast_jsonparser
   flamegraph
   friendly_id
   haml-lint
@@ -624,6 +630,7 @@ DEPENDENCIES
   sassc-rails
   selenium-webdriver
   share-to-fediverse-jekyll-theme
+  sourcemap
   spring
   spring-watcher-listen (~> 2.0.0)
   sqlite3
diff --git a/app/controllers/api/v1/notices_controller.rb b/app/controllers/api/v1/notices_controller.rb
new file mode 100644
index 0000000..c3e9659
--- /dev/null
+++ b/app/controllers/api/v1/notices_controller.rb
@@ -0,0 +1,46 @@
+# frozen_string_literal: true
+
+module Api
+  module V1
+    # Recibe notificaciones desde Airbrake
+    #
+    # TODO: Autenticación
+    class NoticesController < BaseController
+      skip_before_action :verify_authenticity_token
+
+      # Generar un stacktrace en segundo plano y enviarlo por correo
+      # solo si la API key es verificable.  Del otro lado siempre
+      # respondemos con lo mismo.
+      def create
+        if verify_api_key
+          BacktraceJob.perform_later site_id: params[:site_id],
+                                     errors: airbrake_params.map(&:permit!).map(&:to_h)
+        end
+
+        render status: 201, json: { id: 1, url: root_url }
+      end
+
+      private
+
+      # XXX: Por alguna razón Airbrake envía los datos con Content-Type:
+      # text/plain.
+      def airbrake_params
+        @airbrake_params ||= params.merge!(JSON.parse(request.raw_post) || {}).require(:errors)
+      end
+
+      def site
+        @site ||= Site.find(params[:site_id])
+      end
+
+      def verify_api_key
+        site.verifier.verify(airbrake_token, purpose: :airbrake) === Site::Api::AIRBRAKE_SECRET
+      rescue ActiveSupport::MessageVerifier::InvalidSignature
+        false
+      end
+
+      def airbrake_token
+        @airbrake_token ||= params[:key]
+      end
+    end
+  end
+end
diff --git a/app/javascript/packs/application.js b/app/javascript/packs/application.js
index d3e001a..b8a8c00 100644
--- a/app/javascript/packs/application.js
+++ b/app/javascript/packs/application.js
@@ -15,6 +15,14 @@
 // const images = require.context('../images', true)
 // const imagePath = (name) => images(name, true)
 
+import { Notifier } from '@airbrake/browser'
+
+window.airbrake = new Notifier({
+  projectId: process.env.AIRBRAKE_SITE_ID,
+  projectKey: process.env.AIRBRAKE_API_KEY,
+  host: process.env.PANEL_URL
+})
+
 import 'core-js/stable'
 import 'regenerator-runtime/runtime'
 import 'controllers'
diff --git a/app/jobs/backtrace_job.rb b/app/jobs/backtrace_job.rb
new file mode 100644
index 0000000..559e0a1
--- /dev/null
+++ b/app/jobs/backtrace_job.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+# Procesa los errores de JavaScript
+class BacktraceJob < ApplicationJob
+  queue_as :low_priority
+
+  attr_reader :errors
+
+  def perform(site_id:, errors:)
+    @errors = errors
+
+    errors.each do |error|
+      error['backtrace'].each do |backtrace|
+        offset = SourceMap::Offset.new(backtrace['line'], backtrace['column'])
+        mapping = sourcemap.bsearch(offset)
+
+        next unless mapping
+
+        backtrace['file'] = mapping.source
+        backtrace['line'] = mapping.original.line
+        backtrace['column'] = mapping.original.column
+      end
+    end
+
+    begin
+      raise NoMethodError
+    rescue NoMethodError => e
+      ExceptionNotifier.notify_exception(e, data: { errors: errors })
+    end
+  end
+
+  private
+
+  # Obtiene todos los archivos del backtrace
+  def files
+    @files ||= errors.map { |x| x['backtrace'] }.flatten.map { |x| x['file'].split('@').last }.uniq
+  end
+
+  # Asume que todos los sourcemaps comparten la misma URL, lo
+  # correcto sería buscarlo en sourceMappingURL al final de cada
+  # archivo.
+  #
+  # Descarga los archivos y obtiene el backtrace original.
+  def sourcemap
+    @sourcemap ||=
+      begin
+        files.map { |x| "#{x}.map" }.map do |x|
+          data = FastJsonparser.parse(Rails.cache.fetch(x, expires_in: 12.hours) do
+            Down.open(x).read
+          end, symbolize_keys: false)
+
+          SourceMap::Map.from_hash data
+        rescue Down::Error, FastJsonparser::Error
+          SourceMap::Map.new
+        end.reduce(&:+)
+      end
+  end
+end
diff --git a/app/models/site.rb b/app/models/site.rb
index 5ff8d90..ec299cd 100644
--- a/app/models/site.rb
+++ b/app/models/site.rb
@@ -6,6 +6,7 @@ class Site < ApplicationRecord
   include FriendlyId
   include Site::Forms
   include Site::FindAndReplace
+  include Site::Api
   include Tienda
 
   # Cifrar la llave privada que cifra y decifra campos ocultos.  Sutty
diff --git a/app/models/site/api.rb b/app/models/site/api.rb
new file mode 100644
index 0000000..0c374f6
--- /dev/null
+++ b/app/models/site/api.rb
@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+class Site
+  module Api
+    extend ActiveSupport::Concern
+
+    AIRBRAKE_SECRET = 'an api key for airbrake'
+
+    included do
+      encrypts :api_key
+      before_save :add_api_key_if_missing!
+
+      # Genera mensajes secretos que podemos usar para la API de cada sitio.
+      def verifier
+        @verifier ||= ActiveSupport::MessageVerifier.new api_key
+      end
+
+      def airbrake_api_key
+        @airbrake_api_key ||= verifier.generate(AIRBRAKE_SECRET, purpose: :airbrake)
+      end
+
+      private
+
+      # Asegurarse que el sitio tenga una llave para la API
+      def add_api_key_if_missing!
+        self.api_key ||= SecureRandom.hex(64)
+      end
+    end
+  end
+end
diff --git a/config/routes.rb b/config/routes.rb
index cce1072..b65fc2c 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -35,6 +35,8 @@ Rails.application.routes.draw do
   # Obtener archivos estáticos desde el directorio público
   get '/sites/:site_id/static_file/(*file)', to: 'sites#static_file', as: 'site_static_file', constraints: { site_id: %r{[^/]+} }
 
+  match '/api/v3/projects/:site_id/notices' => 'api/v1/notices#create', via: %i[post]
+
   resources :sites, constraints: { site_id: %r{[^/]+}, id: %r{[^/]+} } do
     # Gestionar actualizaciones del sitio
     get 'pull', to: 'sites#fetch'
diff --git a/package.json b/package.json
index 5858243..3595826 100644
--- a/package.json
+++ b/package.json
@@ -2,6 +2,7 @@
   "name": "sutty",
   "private": true,
   "dependencies": {
+    "@airbrake/browser": "^1.4.1",
     "@rails/actiontext": "^6.0.0",
     "@rails/webpacker": "5.2.1",
     "commonmark": "^0.29.0",
diff --git a/yarn.lock b/yarn.lock
index 6b6dd79..dfab3fb 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2,6 +2,18 @@
 # yarn lockfile v1
 
 
+"@airbrake/browser@^1.4.1":
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/@airbrake/browser/-/browser-1.4.1.tgz#c0832eed3096498e51ff947e1e35bda23021a7be"
+  integrity sha512-4KChn2eGDllwqYJ4c6MFqIiJ2RZgg49inYiIsdpAj5MLtOpZRlPF8MsOSLGHxkEDX6u5M9KRidUfktuQ/C9lKA==
+  dependencies:
+    "@types/promise-polyfill" "^6.0.3"
+    "@types/request" "2.48.5"
+    cross-fetch "^3.0.4"
+    error-stack-parser "^2.0.4"
+    promise-polyfill "^8.1.3"
+    tdigest "^0.1.1"
+
 "@babel/code-frame@^7.0.0":
   version "7.5.5"
   resolved "https://registry.yarnpkg.com/@babel/code-frame/-/code-frame-7.5.5.tgz#bc0782f6d69f7b7d49531219699b988f669a8f9d"
@@ -983,6 +995,11 @@
   resolved "https://registry.yarnpkg.com/@stimulus/webpack-helpers/-/webpack-helpers-1.1.1.tgz#eff60cd4e58b921d1a2764dc5215f5141510f2c2"
   integrity sha512-XOkqSw53N9072FLHvpLM25PIwy+ndkSSbnTtjKuyzsv8K5yfkFB2rv68jU1pzqYa9FZLcvZWP4yazC0V38dx9A==
 
+"@types/caseless@*":
+  version "0.12.2"
+  resolved "https://registry.yarnpkg.com/@types/caseless/-/caseless-0.12.2.tgz#f65d3d6389e01eeb458bd54dc8f52b95a9463bc8"
+  integrity sha512-6ckxMjBBD8URvjB6J3NcnuAn5Pkl7t3TizAg+xdlzzQGSPSmBcXf8KoIH0ua/i+tio+ZRUHEXp0HEmvaR4kt0w==
+
 "@types/events@*":
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/@types/events/-/events-3.0.0.tgz#2862f3f58a9a7f7c3e78d79f130dd4d71c25c2a7"
@@ -1017,11 +1034,31 @@
   resolved "https://registry.yarnpkg.com/@types/parse-json/-/parse-json-4.0.0.tgz#2f8bb441434d163b35fb8ffdccd7138927ffb8c0"
   integrity sha512-//oorEZjL6sbPcKUaCdIGlIUeH26mgzimjBB77G6XRgnDl/L5wOnpyBGRe/Mmf5CVW3PwEBE1NjiMZ/ssFh4wA==
 
+"@types/promise-polyfill@^6.0.3":
+  version "6.0.3"
+  resolved "https://registry.yarnpkg.com/@types/promise-polyfill/-/promise-polyfill-6.0.3.tgz#e2f38fcd244a9e0df2cc7528e0711abcbc707b5e"
+  integrity sha512-f/BFgF9a+cgsMseC7rpv9+9TAE3YNjhfYrtwCo/pIeCDDfQtE6PY0b5bao2eIIEpZCBUy8Y5ToXd4ObjPSJuFw==
+
 "@types/q@^1.5.1":
   version "1.5.2"
   resolved "https://registry.yarnpkg.com/@types/q/-/q-1.5.2.tgz#690a1475b84f2a884fd07cd797c00f5f31356ea8"
   integrity sha512-ce5d3q03Ex0sy4R14722Rmt6MT07Ua+k4FwDfdcToYJcMKNtRVQvJ6JCAPdAmAnbRb6CsX6aYb9m96NGod9uTw==
 
+"@types/request@2.48.5":
+  version "2.48.5"
+  resolved "https://registry.yarnpkg.com/@types/request/-/request-2.48.5.tgz#019b8536b402069f6d11bee1b2c03e7f232937a0"
+  integrity sha512-/LO7xRVnL3DxJ1WkPGDQrp4VTV1reX9RkC85mJ+Qzykj2Bdw+mG15aAfDahc76HtknjzE16SX/Yddn6MxVbmGQ==
+  dependencies:
+    "@types/caseless" "*"
+    "@types/node" "*"
+    "@types/tough-cookie" "*"
+    form-data "^2.5.0"
+
+"@types/tough-cookie@*":
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/@types/tough-cookie/-/tough-cookie-4.0.0.tgz#fef1904e4668b6e5ecee60c52cc6a078ffa6697d"
+  integrity sha512-I99sngh224D0M7XgW1s120zxCt3VYQ3IQsuw3P3jbq5GG4yc79+ZjyKznyOGIQrflfylLgcfekeZW/vk0yng6A==
+
 "@webassemblyjs/ast@1.9.0":
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/@webassemblyjs/ast/-/ast-1.9.0.tgz#bd850604b4042459a5a41cd7d338cbed695ed964"
@@ -1533,6 +1570,11 @@ binary-extensions@^2.0.0:
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-2.1.0.tgz#30fa40c9e7fe07dbc895678cd287024dea241dd9"
   integrity sha512-1Yj8h9Q+QDF5FzhMs/c9+6UntbD5MkRfRwac8DoEm9ZfUBZ7tZ55YcGVAzEe4bXsdQHEk+s9S5wsOKVdZrw0tQ==
 
+bintrees@1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/bintrees/-/bintrees-1.0.1.tgz#0e655c9b9c2435eaab68bf4027226d2b55a34524"
+  integrity sha1-DmVcm5wkNeqraL9AJyJtK1WjRSQ=
+
 block-stream@*:
   version "0.0.9"
   resolved "https://registry.yarnpkg.com/block-stream/-/block-stream-0.0.9.tgz#13ebfe778a03205cfe03751481ebb4b3300c126a"
@@ -2261,6 +2303,13 @@ crelt@^1.0.0:
   resolved "https://registry.yarnpkg.com/crelt/-/crelt-1.0.4.tgz#9a05d7829aedf79538f2b26f7de319cf45a25b47"
   integrity sha512-l1cwMUOssGLEj5zgbut4lxJq95ZabOXVZnDybNqQRUtXh1lvUK7e7kJNm8SfvTQzYpE3AVJhIVUJKf382lMA7A==
 
+cross-fetch@^3.0.4:
+  version "3.0.6"
+  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-3.0.6.tgz#3a4040bc8941e653e0e9cf17f29ebcd177d3365c"
+  integrity sha512-KBPUbqgFjzWlVcURG+Svp9TlhA5uliYtiNx/0r8nv0pdypeQCRJ9IaSIc3q/x3q8t3F75cHuwxVql1HFGHCNJQ==
+  dependencies:
+    node-fetch "2.6.1"
+
 cross-spawn@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-3.0.1.tgz#1256037ecb9f0c5f79e3d6ef135e30770184b982"
@@ -2832,6 +2881,13 @@ error-ex@^1.2.0, error-ex@^1.3.1:
   dependencies:
     is-arrayish "^0.2.1"
 
+error-stack-parser@^2.0.4:
+  version "2.0.6"
+  resolved "https://registry.yarnpkg.com/error-stack-parser/-/error-stack-parser-2.0.6.tgz#5a99a707bd7a4c58a797902d48d82803ede6aad8"
+  integrity sha512-d51brTeqC+BHlwF0BhPtcYgF5nlzf9ZZ0ZIUQNZpc9ZB9qw5IJ2diTrBY9jlCJkTLITYPjmiX6OWCwH+fuyNgQ==
+  dependencies:
+    stackframe "^1.1.1"
+
 es-abstract@^1.12.0, es-abstract@^1.5.1:
   version "1.13.0"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.13.0.tgz#ac86145fdd5099d8dd49558ccba2eaf9b88e24e9"
@@ -3199,6 +3255,15 @@ forever-agent@~0.6.1:
   resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
   integrity sha1-+8cfDEGt6zf5bFd60e1C2P2sypE=
 
+form-data@^2.5.0:
+  version "2.5.1"
+  resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.5.1.tgz#f2cbec57b5e59e23716e128fe44d4e5dd23895f4"
+  integrity sha512-m21N3WOmEEURgk6B9GLOE4RuWOFf28Lhh9qGYeNlGq4VDXUlJy2th2slBNU8Gp8EzloYZOibZJ7t5ecIrFSjVA==
+  dependencies:
+    asynckit "^0.4.0"
+    combined-stream "^1.0.6"
+    mime-types "^2.1.12"
+
 form-data@~2.3.2:
   version "2.3.3"
   resolved "https://registry.yarnpkg.com/form-data/-/form-data-2.3.3.tgz#dcce52c05f644f298c6a7ab936bd724ceffbf3a6"
@@ -4840,6 +4905,11 @@ nice-try@^1.0.4:
   resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
   integrity sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==
 
+node-fetch@2.6.1:
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
+  integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
+
 node-forge@^0.10.0:
   version "0.10.0"
   resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-0.10.0.tgz#32dea2afb3e9926f02ee5ce8794902691a676bf3"
@@ -6167,6 +6237,11 @@ promise-inflight@^1.0.1:
   resolved "https://registry.yarnpkg.com/promise-inflight/-/promise-inflight-1.0.1.tgz#98472870bf228132fcbdd868129bad12c3c029e3"
   integrity sha1-mEcocL8igTL8vdhoEputEsPAKeM=
 
+promise-polyfill@^8.1.3:
+  version "8.2.0"
+  resolved "https://registry.yarnpkg.com/promise-polyfill/-/promise-polyfill-8.2.0.tgz#367394726da7561457aba2133c9ceefbd6267da0"
+  integrity sha512-k/TC0mIcPVF6yHhUvwAp7cvL6I2fFV7TzF1DuGPI8mBh4QQazf36xCKEHKTZKRysEoTQoQdKyP25J8MPJp7j5g==
+
 prosemirror-commands@^1.0.0:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/prosemirror-commands/-/prosemirror-commands-1.1.4.tgz#991563e67623acab4f8c510fad1570f8b4693780"
@@ -7241,6 +7316,11 @@ stable@^0.1.8:
   resolved "https://registry.yarnpkg.com/stable/-/stable-0.1.8.tgz#836eb3c8382fe2936feaf544631017ce7d47a3cf"
   integrity sha512-ji9qxRnOVfcuLDySj9qzhGSEFVobyt1kIOSkj1qZzYLzq7Tos/oUUWvotUPQLlrsidqsK6tBH89Bc9kL5zHA6w==
 
+stackframe@^1.1.1:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/stackframe/-/stackframe-1.2.0.tgz#52429492d63c62eb989804c11552e3d22e779303"
+  integrity sha512-GrdeshiRmS1YLMYgzF16olf2jJ/IzxXY9lhKOskuVziubpTYcYqyOwYeJKzQkwy7uN0fYSsbsC4RQaXf9LCrYA==
+
 static-extend@^0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/static-extend/-/static-extend-0.1.2.tgz#60809c39cbff55337226fd5e0b520f341f1fb5c6"
@@ -7497,6 +7577,13 @@ tar@^6.0.2:
     mkdirp "^1.0.3"
     yallist "^4.0.0"
 
+tdigest@^0.1.1:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/tdigest/-/tdigest-0.1.1.tgz#2e3cb2c39ea449e55d1e6cd91117accca4588021"
+  integrity sha1-Ljyyw56kSeVdHmzZEReszKRYgCE=
+  dependencies:
+    bintrees "1.0.1"
+
 terser-webpack-plugin@^1.4.3:
   version "1.4.5"
   resolved "https://registry.yarnpkg.com/terser-webpack-plugin/-/terser-webpack-plugin-1.4.5.tgz#a217aefaea330e734ffacb6120ec1fa312d6040b"